Tire spreader



E. H. SCHAEFFER Aug. 28, 1928.

TIRE SPREADER Filed Nov. 5, 1927 2 Sheets-Sheet. 1

Aug. 28, 192s. 1,632,632

E. H. SCHAEFFER TIRE SPREADER Filed Nov. s, 1927 2 sneetsLsneet' 2 Patented Aug. 28, 1928.

UNITED STATES ELHEB H. SCHAEFFER, F

READING, PENNSYLVANIA.

TIRE SPREADER.

Application led November This invention relates to a tire spreader and it is an object of the invention to provide a device of this kind whereby the marginal or edge portions of a tire casing may be readily and conveniently spread to permit ready access within the casing for purposes as may be required.

Another object of the invention is to provide a. device of this kind which has rela tively movable members moving step by step in a direction one away from the other to facilitate and expediate the desired spreading operation.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved tire spreader whereby certain important advantages are attained and the dovice rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to decribe the same with reference to the accompanying drawings, wherein Y Figure 1 is a view in top plan of a 30 spreader constructed in accordance with an embodiment of my invention, the parts in closed or compact relation;

Figure 2 is a sectional view taken sub stantially on the line 2--2 of Figure 1;

Figure 3 is an enlarged fragmentary sectional view partly in side lelevation and partly in section of the structure as herein disclosed, certain of the parts in a second position; n

Figure 4 is a fragmentary view in top plan of the spreader.

Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 4;

Figure 6 is a view in top plan of the sliding or movable plate as employed.

As disclosed in the accompanying drawings, 1 denotes a plate having at one end a curved lug 2 adapted to engage around .one edge marginal portion of the tire casing. At the opposite end portion of the plate is provided a pair of parallel arms 3 having their inner marginal portions at their outer extremities defined by the upstanding members 4 tied or connected at their upper or outer ends by the cross member 5 preter- 5, 1927. Serial No. 231,333.`

ably integrally formed therewith. This cross member 5 has its lower intern'icdiate portion rounded as is the adjacent portion of the arms 4 and the cross member 6 bridglng the space between the arms 3 at substantially the junction therewith of the arms. 4. By this means an opening 7 is provided. through which the bar 8 passes, thus enabling said bar 8 and the plate 1 to have shifting movement one with respect to the other in a. direction lengthwise of the bar 8. The rounded portion of the cross member 5 is defined by an out-standing lip or fiangc 9 the same being of a size to prevent the cross member 5 dropping within any one of the ratchet notches 10 provided 1n the bar 8.

-The plate 1 at its junction withA the arms 3 1s provided with a .pair of upstanding lugs 11 transversely spaced and between which the .bar 8 is also freely directed, said bar having contact with an upstanding rib 12. Pivot-ally connected to the cross member' 5 at 14 is a latch lever, the end portion of the latch lever 15 adapted to swing by gravity toward the bar 8 and be selectively or successively engaged in the notches 1() whereby, as will be hereinafter explained, is effected a step by step relative movement in onc`direction of the bar 8 and the plate 1.k The pivoted end portion of the lever 15 is provided with an outstanding tail piece 16 providing means whereby the lever 15 when desired may be readily swung out of engagement with the bar 8. y

Pivotally connected as at 17 with the outer end portions of the arms 3 are the rigid links 18 which are also pivotally connected as at 19 to the levers 2O and at points substantially midway the ends of said levers. The rear or outer end extremities of the levers 2O are angularly disposed to provide convenient operating handles 21.

The opposite or forward end portions of the levers 2() are pivotally connected as at 22 to the side marginal portions of the cast ing 23 slidably mounted on the bar 8 and rovided with the transverscl suaced u standing lugs 24. One end portion oi the casting 23 is provided with an outstanding lip 25. A lever 26 is pivotally connected as at 27 between the lugs 28 carried by a head 29. This head 29 is iixed to the outer end portion of the bar 8 and is provided with the angular-ly related lips 30 and 31, the lip 31 being adapted to engage a side edge of a tire casing while the lip is adapted to lie transversely across the edge of the casing when the device applied thereto.

Pivotally connected with the-lugs it are the links 32 of desired length and having their outer end portions connected by cross pins 33 adapted to be selectively and si eressively engaged within the notches 3l provided in the inner longitudinal marginal portion of the lever Q6 in a space directed lengthwise thereof. The notches` 3a are disposed in a direction away from the pivotal mounting Q7 of the lever and the said inner marginal portion of the lever is provided at its inner part with a notch or recess facing said pivotal mounting QT and provided with a lip 3G which, when the, lever Qtis at the limit ot its movement toward the bar 8. rests upon the lip Q5 hereinbei'ore referred to and at which time the pin 33 is engaged within the notch 361 rFlins means are provided whereby the device is ell'ectively maintained in its *folded compact condition. Then it is desired to release the pin 33 troni within the notch 35 it is only necessary to swing the lever 26 outwardly a distance sufficient to permit the pin 33 to pass from within the notchv whereupon the links 32 will swing back toward the liar 8 and contact with the lip Q5. Upon release oi the lever Q6 the saine will swing toward the bar S and the lip 3G will drop upon or contact from above with the pin 33,' thus assuring the parts to be in requisite position for a desired step by step movement to extend or project the bar 8 upon proper manipiilatioii ot the levers 20 to secure. the desired spreading of the tire casing. As the levers i0 swing outwardly1 the casting :23 will be moved in 'ardly of the bar S a distance to bring the pin 33 to a position to `engage, within a, notch 34and during which time the plate l is held against forward movement along the bar 9 by engagement oi the lever 15 within the notch l0. Upon then swinging the. levers 2O inwardlytoward the bai' 8 the pin 33 will engage within a notch 34 of the lever 2G. thus holding the casting Q3 against inward iiioveinent on the bar S and attlic same time swinging the plat-e l rearwardly or outwardly unt-il the saine has moved sufficiently to permit the lever l5 to engagewithin a second notch 10. The levers QOare then swung outwardly and such operations continued until the bar 8 has been projected a distance sufficient to accomplish the desired spreading ot the tire.` During this operation it is tobe understood that the lug 2 of the plate. l, and the lips 30 and 3l ot the head Q9 have been suitably engaged with the marginal edges of the tire casing. It is to be noted that the links 32 in the assembly are disposed from the lugs 2,4 in a direction inwardly ot' the bar 8.

This application is partly in continuation of my application Serial No. 203,817 tiled July 6, 1927.

From the foregoing description it is thought topbe obvious 4that a tire spreader constructed in accordance with my invention is particularly well adapted for use by rcason ol the convenience and facility with which it may he assembled and operated, and it will also be obvious that my invention is susceptible ol' sonic change and modilcation without departing from the principles and spirit thereof and lor this reason l do not wish to be understood as limiting myself to the precise arrangement and l'orinatioii o'f, the several parts herein shown in carrying out my invention in practice exceptas liei'einafter claimed.

l. A tire spreader comprising a plate having a tire engaging lug, links at. opposite sides ot' the plate and pivoted thereto, levers pivoted upon the links, a casting pivoted to the levers, a bar slidahly received by the casting, said plate being also slidably engaged with the liar, a head carried bythe bar provided with a tire engaging lip, a lever pivoted to the head, anda rigid ineinber pivoted to the casting and `having a part engageable with the last named lever.

if. A tire spreader.comprising a plate having a tire engaging lug, links at Opposite sides ot the plate and pivoted thereto, levers pivoted upon thelinks, a. casting pivotedto the levers, a liar slidably received by the casting, said plate being also slidably engaged with thc bar, a head carried 'by the bar provided with a tire engaging lip, a

lever pivoted to the head and a rigid ineinber pivoted to the casting and having a part engagealilel with the last named lever, said rigid member and thelast named `lever `being disposed inwardly with 'respect to the head carried by the bar.

3. A tire spreader com prisinf:r a plateliaving a tire engaging lug, links atop )osito sides ol` the plate and pivoted thereto, levers pivoted to the links, a `casting' pivoted vto the levers and having outstanding lugs, links pivoted to the lugs, a cross i'iiiiieonnecting said links, a bar, said plate and casting being slidahly mounted on the har,'a'lieai.l` earried by thc har and `having a tire engaging lip, and a lever pivoter] tothe head and having notches theiealong to receive the cross pin.

4. A tire spreader comprising a plate having a tire engaging lug, links at opposite sides of ,the plate and pivotally connected thereto, leversl ,pivoted to the links, cast-` ing to which the levers are also rpivotally connected, a liar.v the plate and casting being mounted tor sliding inovcii'ient on the bar` a head carried Lby the bar outwardly of `the applied castingr provided ,with autirc cngag- "llO ing lug, and coacting means carried by the head and casting and by the plate and bar to effect an intermittent outward movement of the bar upon oscillating the levers.

5. A tire spreader comprising a plate having a tire engaging lug, links at opposite sides of the plate and pivoted thereto, levers pivoted upon the links, a casting pivoted to the levers, a bar slidably received by the casting, said plate being also slidably mounted upon the bar, a head carried by the bar provided with a tire engaging lip, a lever pivoted to the head, a rigid member pivoted to the casting and having a part engageable with the last named lever, and coacting means carried by the bar and plate for holding the plate against movement on the bar toward the head.

6. A tire spreader comprising a plate havino* a tire engaging lug, links at opposite si es of the plate and pivotally connected thereto, levers pivoted upon the links, a casting pivoted to the levers and having outstanding lugs, links pivoted to the lugs, a cross pin connectinor said links, a bar, said plate and casting lbeing sldably mounted on the bar, a head carried by the bar and having a tire engaving lip, and a lever pivoted to the hea and having notches therealong to receive the cross pin, said l lever of the head being provided at its inner part with a notch disposed tovvard the head and adapted to receive the pin When the parts of the device are compact.

In testimony whereof I hereunto aflix my signature.

ELMER H. SCHAEFFER. 

